-
公开(公告)号：US20240091904A1
公开(公告)日：2024-03-21
申请号：US18369964
申请日：2023-09-19
申请人： Guido VALENTINI
发明人： Guido VALENTINI
摘要： The invention refers to a hand-held and hand-guided motor driven polishing or sanding tool (2). The tool (2) has a tool housing (4) and a motor (6; 62) located therein. The tool (2) further has a polishing or sanding working element (8) attached to a tool shaft (10) of the tool (2). The motor (6; 62) is adapted to drive the tool shaft (10) in a first direction of rotation (12).
It is suggested that the tool (2) is equipped with a switch (44) for changing the sense of rotation of the tool shaft (10) between the first direction of rotation (12) and a second direction of rotation (42) opposite to the first direction of rotation (12).-
公开(公告)号：US11865668B2
公开(公告)日：2024-01-09
申请号：US18077460
申请日：2022-12-08
申请人： MAKITA CORPORATION
发明人： Kenji Shibata , Masanori Furusawa
摘要： A grinder including a motor, a switch operated ON and OFF in accordance with an operation of a switch lever to control a rotation of an output shaft of the motor, a spindle that rotates in accordance with the rotation of the output shaft to rotate a disk-shaped grinding wheel and a brake mechanism controllable with respect to a brake plate that integrally rotates with the output shaft, in a housing, the brake plate includes fins.
-
公开(公告)号：US11858085B2
公开(公告)日：2024-01-02
申请号：US17942379
申请日：2022-09-12
申请人： Black & Decker Inc.
IPC分类号： B24B23/02 , B24B47/00 , B25F5/02 , B24B55/10 , B24B47/12 , H01M50/519 , H01M50/296 , H01M50/244 , H01M50/247 , B24B23/00
CPC分类号： B24B23/02 , B24B47/00 , B24B47/12 , B24B55/102 , B25F5/02 , H01M50/244 , H01M50/296 , H01M50/519 , B24B23/00 , H01M50/247 , H01M2220/30
摘要： A power tool includes a housing. A motor is housed in the housing. A platen is driven by the motor. The housing includes a first housing part, a second housing part and a third housing part. The housing defines a battery receptacle portion configured to receive a removable battery pack which powers the motor. Each of the first housing part, the second housing part and the third housing part form part of the battery receptacle portion.
-
公开(公告)号：US20230405761A1
公开(公告)日：2023-12-21
申请号：US18076589
申请日：2022-12-07
发明人： Nario Yoshida
摘要： A polishing device according to the present invention includes: a plurality of workpiece holding units that respectively hold workpieces; a base part that is rotatable about a center axis, and is arranged such that the plurality of workpiece holding units are arranged mutually at an equal interval on an identical circumference at an arbitrary distance from the center axis; and a plurality of workpiece polishing units that polish polishing target surfaces of the workpieces held by the workpiece holding units, the base part rotates in one direction about the center axis to sequentially move the workpiece holding units that hold the workpieces to the plurality of polishing positions such that the plurality of workpiece polishing units polish the workpieces, and moves the workpieces polished by the plurality of workpiece polishing units to the workpiece exchange position, and exchanges the polished workpieces with a workpiece that is not yet polished.
-
公开(公告)号：US20230396128A1
公开(公告)日：2023-12-07
申请号：US18235661
申请日：2023-08-18
申请人： Black & Decker Inc.
CPC分类号： H02K7/145 , H02P6/14 , H02P6/28 , H02P6/15 , B25F5/008 , B24B23/028 , B24B47/12 , H02P2006/045
摘要： A power tool comprising a housing and a brushless direct-current (BLDC) motor disposed within the housing. The motor includes a stator and a rotor rotatable relative to the stator. The power tool is configured to generate a power output from the motor that is greater than 1200 continuous hot Watts out such that a quotient obtained by the power output measured in Watts (Wout), divided by an input measured in Volt-Amperes (Vain), and further divided by a volume of the power tool measured in cubic centimeters (cc), is greater than 600 Wout/Vain/cc.
-
公开(公告)号：US11789213B2
公开(公告)日：2023-10-17
申请号：US17939962
申请日：2022-09-08
发明人： Atsushi Yamada , Yuji Shibutani
CPC分类号： G02B6/3863 , B24B19/226 , B24B41/06 , B24B47/12
摘要： An end face polishing device for optical fiber ferrule for polishing an end face of an optical fiber ferrule by applying a polishing pressure between a polishing plate driven by a polishing drive shaft and an optical fiber ferrule held by a holding portion. The end face polishing device has: a bearing portion for allowing the polishing plate to rotate relatively around the polishing drive shaft and to move relatively to the polishing drive shaft in an axial direction; a polishing plate guide supporting portion for movably supporting the polishing plate on a base portion to apply the polishing pressure to the holding portion by allowing the polishing plate to move in the axial direction; a pressing drive source for outputting a driving force to apply the polishing pressure; and a pressing force transmission mechanism for transmitting the driving force output from the pressing drive source as a pressing force in the axial movement direction of the polishing plate.
-
公开(公告)号：US11787009B2
公开(公告)日：2023-10-17
申请号：US16127345
申请日：2018-09-11
发明人： Yanfeng Fan , Haijing Wang , Baoshan Li , Guoming Tong , Tao Tao , Xiang Zhao
IPC分类号： B24B47/12 , H02K7/14 , H02K1/10 , B24B7/02 , B25F5/00 , H02K7/116 , H02K7/06 , H02K5/10 , B24B23/02 , H02K9/06
CPC分类号： B24B47/12 , B24B23/028 , B25F5/008 , H02K5/10 , H02K7/145 , H02K7/1163 , H02K9/06
摘要： An electric tool includes an output member, a motor, and a housing. The motor includes a rotor shaft, a rotor core, and a stator component. The rotor shaft is configured to rotate around a first axis. The stator component includes a coil winding. The stator component surrounds the first axis to separate the accommodation cavity into a first space and a second space. The first space includes a first end and a second end. The motor further includes a first end cover and a second end cover. The first end cover is disposed at the first end of the first space. The second end cover is disposed at the second end of the first space. A passage is formed between the second end cover and a structure surrounding the first space, and the passage is configured to place the first space into communication with the second space.
-
公开(公告)号：US20230278161A1
公开(公告)日：2023-09-07
申请号：US17687010
申请日：2022-03-04
发明人： Scott S. MCLAIN
CPC分类号： B24B47/12 , B24B23/028 , B24B23/03 , B24B23/04 , B24B41/042
摘要： An automatic adjustable stroke device for a random orbital machine has a housing with a central axis and a wall defining a cavity. A counterbalance shaft assembly is rotatably disposed at least partially within the cavity. A shaft portion of the counterweight shaft assemblies aligned with the central axis. A mounting assembly is disposed at least partially within the cavity. The mounting assembly has a workpiece attachment mechanism. A stroke adjuster couples the counterweight shaft with the mounting assembly. The stroke adjuster enables the mounting assembly to adjust its stroke upon rotation of counterweight shaft. The mounting assembly variably adjusts a stroke radius of the workpiece attachment mechanism with respect to the central axis of the housing. The stroke adjuster has a gear automatically adjusting the mounting assembly stroke.
-
公开(公告)号：US20230250864A1
公开(公告)日：2023-08-10
申请号：US18302158
申请日：2023-04-18
发明人： Scott S. MCLAIN , Mark SNYKER
CPC分类号： F16H25/18 , B24B23/04 , B24B47/12 , B24B41/042 , B24B23/03 , F16C3/28 , B25F5/001 , B25F5/02 , F16C2322/39 , F16C2322/50
摘要： An adjustable stroke mechanism has a housing with a central axis and a wall enclosing a cavity. At least one counterweight is movably disposed within the cavity. A mounting assembly is disposed within the cavity. The mounting assembly has a workpiece attachment mechanism. A stroke adjustor couples the at least one counterweight with the mounting assembly. The stroke adjustor enables the counterweight and mounting assembly to move with respect to one another such that a distance between the counterweight and the mounting assembly is variably adjusted which, in turn, variably adjusts a stroke radius of the workpiece attachment mechanism with respect to the central axis of the housing.
-
公开(公告)号：US11695352B2
公开(公告)日：2023-07-04
申请号：US17372936
申请日：2021-07-12
摘要： A power tool includes a three-phase DC motor, a power switching network, a power source, and an electronic processor. A first phase of the motor is connected between a first low side electronic switch and a power source electronic switch, and connected to the power source via a first high side electronic switch in parallel with a diode. The electronic processor is configured to receive an indication to stop the motor during operation of the motor and activate the first low side electronic switch and a second low side electronic switch for a first predetermined time responsive to receiving the indication such that a back-electromagnetic force generated by the motor is stored in the first phase. The electronic processor is configured to deactivate the second low side electronic switch after the first predetermined time such that a first regenerative current is provided to the power source via the diode.
-
-
-
-
-
-
-
-
-
搜索结果
397 条记录 (耗时 0.021 秒)
